Zeraph

Not really answering my question as Latino is not a place. It's referring to their Latin based language, not an area of living. Nor is African-American (they're places separately but together its a "race").

Or how about, even though its not PC, Indians? The native Americans I mean. And shoot is it, Native, or native...?

Or Muslims, Jews? Those are not places you can go to on a map. They're associations by belief.

So *why* is one proper and one common? They're all referring to groups of people. I'm not seeing a difference.